PHILADELPHIA — Sen. John McCain may find himself facing serious questions following the disclosure that the Hillary Clinton campaign and the Democratic National Committee helped fund research utilized in the infamous, largely discredited 35-page dossier on President Donald Trump.

In December, it was McCain who notoriously passed the controversial dossier documents produced by the Washington opposition research firm Fusion GPS to then FBI Director James Comey, whose agency reportedly utilized the dossier as some of the basis for its probe into alleged Russian interference in the 2016 presidential election.

McCain’s office did not immediately respond to Breitbart News phone and email requests for comment about whether the Arizona senator was aware that the research he passed to the FBI was paid for by the DNC and Clinton’s campaign.

McCain’s office also did not immediately respond to a request for information on how he first obtained the dossier.

The Washington Post on Tuesday reported that in April 2016, attorney Marc E. Elias and his law firm, Perkins Coie, retained Fusion GPS to conduct the questionable research on behalf of both the Clinton campaign and the DNC. Through Perkins Coie, Clinton’s campaign and the DNC continued to fund Fusion GPS until October 2016, days before Election Day, the Post reported.

Fusion GPS went on to hire former intelligence agent Christopher Steele to do the purported research. Steele later conceded in court documents that part o

Senator John McCain passed documents to the FBI director, James Comey, last month alleging secret contacts between the Trump campaign and Moscow and that Russian intelligence had personally compromising material on the president-elect himself.

The Guardian has not been able to confirm the veracity of the documents’ contents, and the Trump team has consistently denied any hidden contacts with the Russian government.

A spokesman for the Russian president, Vladimir Putin, on Wednesday denied Russia has collected compromising information on Trump and dismissed news reports as a “complete fabrication and utter nonsense”. Dmitry Peskov insisted that the Kremlin “does not engage in collecting compromising material”.

Trump’s transition team did not immediately respond to a request for comment, but late on Tuesday, Trump tweeted: “FAKE NEWS – A TOTAL POLITICAL WITCH HUNT!” He made no direct reference to the allegations.

McCain loathes Trump. Is that why he killed two forms of Obamacare repeal this year?